AMERICAN PUILOSOPniCAL SOCIETY. 561 



HALITLUS Latr. 

 H. 12-PUNCTATUS Say. — Some specimens were found in 

 Mexico, in the locality above mentioned, by William Heiinett, 

 and presented to me by Mr. William Maclure. They vary a little 

 from those of this region in being very slightly more elongated 

 and larger; but the spots, their arrangement and the sculpture, 

 appear to be precisely the same. The species is therefore found 

 over the greater part of North America ea.st of the Rocky 

 Mountains. 



NOTERUS Latr. 



N. BicoLOR. — Iloney-yellow ; elytra black, punctured. 



Inhabits Louisiana. 



Head and thorax honey-yellow ; eyes black ; paljii not deeply 

 cmarginate ; elytra black, punctured ; at tip ob.soletcly pieeous, 

 very oblicjuely and slightly truncate ; acute ; beneath honey-yel- 

 low, or pieeous. 



Length one-tenth of an inch. 



For this species I am indebted to Mr. Rarabino. 



[Afterwards described as Suphis ijihhnlus Aube. — Lkc] 



HYDROCANTHUS Say. [447] 



H. ATRIPENNIS. — Ferruginous; black. 



Inhabits Mexico. 



Head and thorax ferruginous ; the former with an oblong tri- 

 angular, obsolete, darker spot between the eyes, and the latter 

 with an impressed line on the lateral submargin ; elytra blue- 

 black, immaculate, impuncturcd ; pectus, as well as the head be- 

 neath, dull yellowish ; sternum flat, at its anterior tip acute, but 

 not prominent, dusky ; postpectus blackish, dull yellow at tip; 

 feet, intermediate and posterior pairs blackish, slightly varied 

 with pieeous. 



Length less than one-fifth of an inch. 



This is the second species of this genus ; the first I published 

 in the Trans. Amer. Philos. Soc. vol. 2, new scries. The genus 

 is allied to Xotmis Latr., but the labial palpi are much more di- 

 lated, and have no appearance of emargination. 



1834.] 36 



